Adapter ring



FIG. 1 is a perspective view of the adapter ring, showing my new design;

FIG. 2 is a rear view of the adapter ring;

FIG. 3 is a front view of the adapter ring;

FIG. 4 is a topview of the flanged adapter ring;

FIG. 5 is a bottom view of the flanged adapter ring;

FIG. 6 is a right side view of the flanged adapter ring; and,

FIG. 7 is a left side view of the flanged adapter ring. 

The ornamental design for an adapter ring, as shown and described. 